|
Vcom-04Ant-fix, the Antenna Trainer has been designed for class room experimentation on 4 types of Antennas, RF Signal source and other circuits related are provided. It includes various antenna configurations. Vcom-04Ant-fix consists of a). RF Transmitter b). RF Receiver c). Antenna characteristics Plot software d) 20 types of antennas.
|
|
a).RF Transmitter :
|
|
Features
|
|
Frequency Range : 850 MHz
|
|
LCD Display : 4x20 LCD to display
|
|
a). Frequency
b). RF Level
RF Level : 100dBm
Output Impedance: 50O
|
|
b).RF Receiver :
|
|
Features
|
|
Frequency Range : 850 MHz
RF Output : The RF Level from test antenna is measured and made available to the PIC controller's ADC
Output Impedance: 50 ohms
Stepper Motor controller :
Micro Controller: Based on powerful PIC Micro controller PIC78F8720
One Centronics printer port
128x64 pixels Graphics LCD with Back light to display
i. Angular position ii. RF Level iii. Polar & Cartesian plot.
Angular Step : 1-9 Degrees
Memory : 2K bytes for storing data
|
|
|
PC Interface : Connected to PC through RS232 for sending measured RF datas & position for polar plotting,
Cartesian.
|
|
c). Antenna Characteristics Plot Software:
|
|
Features
|
|
Windows 98,2000, XP compatible
Plotting in polar & cartesian planes with cursor
|
d).Types of Antennas.
|
|
1). Dipole
2). Folded Dipole
3). Yagi (3 Element)
4). Yagi Folded Dipole
5). Monopole
6). End Fire Array
7). Crossed Dipole(RHCP)
8). Micro strip Antenna
|
9). Half wave dipole
10) Loop Antenna
11)
Helix(RHCP)
12)
Helix(LHCP)
13)Yagi Uda Folded Dipole
14) Crossed
Dipole(LHCP)
15)Yagi(4 Element)
16)Bi Conical
17)Discone
|
|
Optional Antennas :
|
|
1. Stacked Yagi
2. d/4 Phase Array
3. Helix Normal Mode
4. V Antenna
5. Patch
6. Horizontal End Fed Hertz Antenna
7.Horizontal End Fed Zeppelin Anteena
|
8. Ground Plane Antenna
9. Ground Plane with reflector & Director
10. Slot Antenna
11. Phase Array
12. Combined Collinear Array
13. Log Periodic Antenna
14. Rhombus Antenna
|
|
3.ANTENNA TRAINER
[Vcom-04Ant/DDS]
[TOC]
|
|
|
Vcom-04Ant, the Antenna Trainer has been designed for class room experimentation on various types of Antennas. This equipment comprises two towers, one being a low power transmitter, controlled by the DDS synthesized RF Transmitter. The second contains a "DDS Synthesized RF Receiver". The antenna to be investigated is mounted on top of the Receiver Tower. The "DDS Synthesized RF Receiver" controls the Receiver tower and rotates it through 360° and displays various characteristics on the Built-in Graphics LCD display (240 x 128) Pixel or it can transmit all data to the PC via RS232 interface and plots all characteristics on the PC Screen. Vcom-04Ant/DDS consists of
i). DDS Synthesized RF Transmitter
ii). DDS Synthesized RF Receiver with Stepper motor Interface. iii). Windows based software and accessories, whose details are given below. This Antenna Trainer uses the latest Technology of "Direct Digital Synthesis".
|
|
|
|
|
|
|
|
|
a).DDS Synthesized RF Transmitter
|
|
Frequency Range : 5-1000 MHz
Resolution :1/10/100KHz (User selectable)
Accuracy : 0.01%
|
|
LCD Display : 4x20 LCD to display
|
|
|
a). Frequency
b). Resolution
c). Modulation
d). Sweep mode
Automatic level control (ALC) incorporated. So that, RF level output will be constant.
RF Level : 0dBm
Attenuator : Variable
Output Impedance: 50 ohms
|
|
|
RF Source 2 :
|
|
Frequency Range : 2100 MHz - 2500 MHz
Used for testing 2.4 GHz Antennas
|
|
b).DDS Synthesized RF Receiver :
|
|
Features
|
|
Frequency Range : 5-1000 MHz
DDS Based Synthesizer.
Resolution : 1/10/100KHz (User Selectable)
Accuracy : 0.01%
LCD Display : 240x128 pixel resolution Graphics LCD to display
a). Frequency
b). Resolution
c). RF Level
d). Sweep mode
RF Measurement : The RF Level from test antenna is measured and displayed on the Graphics LCD display or transmitted to RS232 Interface.
PC Interface : Connected to PC through RS232 for sending measured RF data & position for polar plotting, Cartesian plotting.
|
|
|
Output Impedance: 50 ohms
Stepper Motor controller interface
angular position ii. Step in various graphics format
Angular Step : 1 - 9 Degrees
Memory : 2K bytes for storing datas
|
|
RF Receiver 2 :
|
|
Frequency Range : 2100 MHz - 2500 MHz
RF Measurement : 2100 MHz - 2500 MHz
|
|
c).Antenna Characteristics Plot Software:
|
|
Features
|
|
Windows 98,2000, XP compatible
Plotting in polar & cartesian planes with cursor
|
|
d).Types of Antennas (for 5-1000 MHz Frequency Range).
|
|
1). Dipole
2). Folded Dipole
3). Yagi Uda Folded Dipole
4). Monopole
5). End Fire Array
6). Crossed Dipole (RHCP)
7). Crossed Dipole (LHCP)
8). Yagi (3 Element)
|
9). Yagi (4 Element)
10). Bi Conical
11). Discone
12). Micro strip Antenna
13). Half wave dipole
14). Whip Antenna
15). Loop Antenna
16). Helix (RHCP)
17). Helix (LHCP)
|
|
Optional Antennas :
|
|
1. Stacked Yagi
2. d/4 Phase Array
3. Helix Normal Mode
4. V Antenna
5. Patch
6. Horizontal End Fed Hertz Antenna
7. Horizontal End Fed Zeppelin Antenna
|
8.
Ground Plane Antenna
9. Ground Plane with reflector & Director
10. Slot Antenna
11. Phase Array
12. Combined Collinear Array
13. Log Periodic Antenna
14. Rhombus Antenna
|
e).Antennas for 2.4 GHz Frequency Range
|
Types
|
|
Yagi Antenna
Monopole
|
|
Patch Antenna
Dipole
|
4.Types of Antennas:
[TOC]
|
|
1). Dipole
2). Folded Dipole
3). Yagi (3 Element)
4). Yagi Folded Dipole
5). Monopole
6). End Fire Array
7). Crossed Dipole(RHCP)
8). Micro strip Antenna
|
9). Half wave dipole
10) Loop Antenna
11)
Helix(RHCP)
12)
Helix(LHCP)
13)Yagi Uda Folded Dipole
14) Crossed
Dipole(LHCP)
15)Yagi(4 Element)
16)Bi Conical
17)Discone
|
|
Optional Antennas :
|
|
1. Stacked Yagi
2. d/4 Phase Array
3. Helix Normal Mode
4. V Antenna
5. Patch
6. Horizontal End Fed Hertz Antenna
7.Horizontal End Fed Zeppelin Antenna
|
8. Ground Plane Antenna
9. Ground Plane with reflector & Director
10. Slot Antenna
11. Phase Array
12. Combined Collinear Array
13. Log Periodic Antenna
14. Rhombus Antenna
|
|
|
|
|
